The Access Capture Broker Service can have troubles in uploading documents successfully to it's ADM database if the ADM licence is not up to date.
Please check that your licence is up to date for the ADM software. An out of date licence for ADM can cause this problem of Invoices importing to Dimensions, missing ADM documents.
Please see the following Get support in Access Capture and reference the title of this article
If your license is up to date, this error can also be caused by a network outage, please check with your IT team to see if there have been any connection issues.
Transactions present in Dimensions but document images missing
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